Plate XXXIV. 



Fig. 151. CHYLOCLADIA KALIFORMIS. 



These are but varieties of the plant represented in Plate XXXII. Fig. 146. Tlie 

 one to the left with branches wide-spread, and mostly opposite, is /8. 'patens. The 

 other clothed with quadriferous horizontal branchlets, is y. squarrom. (See under 

 Fig. 14(5.) 



Fig. 152. DASYA ARBUSCULA. 



Colour. Pale reddish-brown; sometimes deep red. 

 Substance. Soft and tender. 



Character of Frond. A very delicate little bush; tufted. Stems as thick as a fine hog's 

 bristle; much and irregularly branched ; sometimes forked (dicliotomous) , some- 

 times furnished with wavy, more or less spreading, alternate branches, which are 

 several times re-branched, and all densely clothed with slender fringing branchlets. 

 Branchlets short, forked, horizontally set, giving the stems a roundish bottle- 

 brush appearance; crowded at the tips as in D. ocellata. 



3Ieasurement. From 2 to 4 inches high. 



Fructification. Of two kinds. 1. Clustered spores in ovate capsules, which have a 

 long cylindrical mouth; external, on the branchlets. 2. Tetraspores in pointed 

 oblong sticliidia. 



Halitat. South of England (Plymouth, &c.). Ireland and Scotland. Very fine at 

 Bantry. On rocks at the verge of low-water mark. Not common. 



A more slender variety, with more regularly forked branching, is obtained by 

 dredging. Alike as this pretty little plant and Dasya ocellata are to each other in 

 general look, they may easily be distinguished on careful examination. The stems 

 of D. ocellata are usually quite simple, and in shape like a peacock's feather; or 

 else slightly branched in the upper part; while those of D. arbuscula are profusely 

 branched either in a forked manner, or with alternate branches which are more 

 than once re-branched. The fringing branchlets are common to both species, but 

 those of D. arbuscula are not above one- sixth of an inch in length. 



Fig. 153. CHYLOCLADIA PARVULA. 



Colour. A fine but fugitive pinky-red. 

 Substance. Soft and somewhat gelatinous. 



Character of Frond. Slender; tubular; constricted at intervals into somewhat inflated 

 joints; much branched and entangled. Branches irregular; alternate, or ^e^^w^^t/; 

 of various lengths; with or without scattered branchlets, which taper slightly to 

 the base. Joint-contractions as long as broad. Root a mass of fibres. 



Measurement. Two or 3 inches long. 



Fructification. Of two kinds. 1. Masses spores in conical capsules; external; seated 

 (sessile) on the branchlets. 2. Tetraspores ; imbedded in the same. 



Habitat. South of England. Not uncommon on the shores of Ireland and west of 

 Scotland. 



Now Cliampia parvula. 



67 



